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Understanding 9/11U.S. Armed Forces Institute Basic Radio Code (1942) (u/l by AF2Z)
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U.S. Armed Forces Institute Basic Radio Code (1942) (u/l by AF2Z)
- Topics
- AF2Z, Morse Code, code, radio, telegraph, radio telegraph, code practice, 78-RPM, phonograph records, U.S. Army, Signal Corps, World War II
- Item Size
- 490.0M
Recordings of 78-RPM Morse Code training records, prepared by the U.S. "Special Service Division, S.O.S., War Department". Manufactured by Allied Record Mfg Co., Hollywood, Calif. (See images of record labels.) There is no date on the recordings but judging by the content ("CORREGIDOR... Get the message through!...") the estimated year of manufacture is probably 1942 or 1943.
The recorded material consists of a code aptitude test, introduction to Morse Code letters and numbers, and training at various speeds up to 16 WPM. There were originally 22 records (44 sides) in the collection but the final one is missing here.
These re-recordings of the original phonograph records have been processed in order to remove some of the disc surface noise.
The recorded material consists of a code aptitude test, introduction to Morse Code letters and numbers, and training at various speeds up to 16 WPM. There were originally 22 records (44 sides) in the collection but the final one is missing here.
These re-recordings of the original phonograph records have been processed in order to remove some of the disc surface noise.
- Addeddate
- 2008-05-16 18:23:51
- Boxid
- OL100020610
- External_metadata_update
- 2019-04-17T04:46:31Z
- Identifier
- U.S._Armed_Forces_Institute_Basic_Radio_Code_ca1942
- Source
- 78-RPM phonograph records.
comment
Reviews
(10)
Reviewer:
foviga8143
-
favoritefavoritefavoritefavoritefavorite -
June 22, 2023
Subject: This is the old test, Kenny has the new test!
Subject: This is the old test, Kenny has the new test!
I listended to the records, and they compare pairs of characters.
This is the old test that was used for decades. But this test
had a high attrition ... rate. During WWII Dael Wolfle was asked to
develop a new test. In the Netherlands there was another test,
and this test turned out to be far superior. After Deal Wolfle's
comparative study it was adopted as the test to use. The new test was shorter
and was adopted and the old test abandoned.
In this report: https://archive.org/download/DTIC_AD0200808/DTIC_AD0200808.pdf
details can be found in chapter 6. The records of the new test are as follows:
Adoption by Army and Navy
The Army and Navy tests^{8,9} referred to in
Section 6.3.3 both led to official adoption in
1944 of the SOR for routine Service use. The
Coast Guard and Maritime Service also used it.
Special recordings of the test were made by
the project for Army and Navy use.
The Navy edition was recorded on two sides
of one record to be played at 33 1/3 rpm. It is
identified as Radio Code Test: Speed of Response,
Form 2, Columbia Recording Corporation
serial number YTNY 2902-2903. The answer
sheet is NavPers 16573.
The Army edition was recorded on eight sides
(four records) to be played at 78 rpm. The test
content is identical with the Navy form; minor
differences in instructions were made to adapt
it to Army use. The Army renamed the test
Army Radio Code Aptitude Test, 1944, ARC-1.
The records bear Columbia Recording Corporation
serial numbers from XP33522 to XP33529.
The answer sheet is IBM Form I.T.S. 1100 B
1133.
So my guess is that Kenny Schroeder has records
of the newly adopted aptitude test. It would be great
if Kenny could chare its content!
Chris verhoef, Amsterdam, The Netherlands
This is the old test that was used for decades. But this test
had a high attrition ... rate. During WWII Dael Wolfle was asked to
develop a new test. In the Netherlands there was another test,
and this test turned out to be far superior. After Deal Wolfle's
comparative study it was adopted as the test to use. The new test was shorter
and was adopted and the old test abandoned.
In this report: https://archive.org/download/DTIC_AD0200808/DTIC_AD0200808.pdf
details can be found in chapter 6. The records of the new test are as follows:
Adoption by Army and Navy
The Army and Navy tests^{8,9} referred to in
Section 6.3.3 both led to official adoption in
1944 of the SOR for routine Service use. The
Coast Guard and Maritime Service also used it.
Special recordings of the test were made by
the project for Army and Navy use.
The Navy edition was recorded on two sides
of one record to be played at 33 1/3 rpm. It is
identified as Radio Code Test: Speed of Response,
Form 2, Columbia Recording Corporation
serial number YTNY 2902-2903. The answer
sheet is NavPers 16573.
The Army edition was recorded on eight sides
(four records) to be played at 78 rpm. The test
content is identical with the Navy form; minor
differences in instructions were made to adapt
it to Army use. The Army renamed the test
Army Radio Code Aptitude Test, 1944, ARC-1.
The records bear Columbia Recording Corporation
serial numbers from XP33522 to XP33529.
The answer sheet is IBM Form I.T.S. 1100 B
1133.
So my guess is that Kenny Schroeder has records
of the newly adopted aptitude test. It would be great
if Kenny could chare its content!
Chris verhoef, Amsterdam, The Netherlands
Reviewer:
msmarko
-
favoritefavoritefavoritefavoritefavorite -
August 27, 2020
Subject: The codes are different for the same letters! I don't get it.
Subject: The codes are different for the same letters! I don't get it.
Reviewer:
Kenny Schroeder
-
favoritefavoritefavoritefavoritefavorite -
March 31, 2020
Subject: I have something like this.
Subject: I have something like this.
I’ve got a couple of records like this but there from the navy and the date for these are 1951. Really cool
Reviewer:
Om_Audio
-
favoritefavoritefavoritefavorite -
February 14, 2016
Subject: thanks
Subject: thanks
In response to the comment about the speed discrepancy: all it would take is a record player that rotated at incorrect speed and presto- rated code speeds
...
do not align. Hopefully they were played with a stroboscopic reference player but regardless these are great. Morse is used extensively by ham radio operators myself included. These materials are a great resource. Would be nice to have the last record I hope someone provides it at some point.
Reviewer:
spdogg
-
February 25, 2013
Subject: Basic radio codes
Subject: Basic radio codes
I have basic radio codes records 1-12 and 13-22, from the United State Armed Forces Insitute. They came from a relative and I'm looking to see how much
...
they are worth. The records are in great condition whereas the binder is in good condition. Thanks.
SP
SP
Reviewer:
GW6WN
-
favoritefavoritefavoritefavoritefavorite -
January 21, 2013
Subject: A UK Morse Code Enthusiast
Subject: A UK Morse Code Enthusiast
This is a great treasure of historical audio & teaching. As useful today as it was way back in 1944!
The only thing I would change (if it were possible) ... would be a more familiar Phonetic Reference.
The teaching and the code is GREAT!
Thank you to AF2Z for uploading his collection
NOW Then, has anyone got a copy of that final record to complete the collection??
The only thing I would change (if it were possible) ... would be a more familiar Phonetic Reference.
The teaching and the code is GREAT!
Thank you to AF2Z for uploading his collection
NOW Then, has anyone got a copy of that final record to complete the collection??
Reviewer:
elmerjfudd21
-
favoritefavoritefavoritefavoritefavorite -
January 15, 2013
Subject: great files
Subject: great files
these are great. I am learning code with them now. c bryan should be corrected. cw is used more often then you might think. cw can be heard across the
...
hf, vhf, and uhf bands. cw is one of the few codes allowed by the fcc to ID a voice transmitter. as such it is used to ID most vhf and uhf repeaters. on the hf and even vhf bands you can find simplex cw rag chew as well as world wide cw contesting. and in some cases news broadcasts in cw. it fell in popularity for a long time but it like ax.25 packet radio is widly used for emergency communication opps.
Reviewer:
c bryan
-
favoritefavoritefavoritefavorite -
November 11, 2011
Subject: Good practice -
Subject: Good practice -
I learned code in the Army, but not from these records. They are machine sent and very crisp. There is no background static or noise - nor music, like
...
it could be copying real code. Hardly anybody uses this antiquated method of communication anymore these days, and one has to keep in practice to take it down. Once Morse was a valuable talent to master; now it's a way to keep one's brain sharp. Hearing this from a speaker is not like having a large rubber-cup headset clamped to your head either. This is just fun to play with for a while.
Reviewer:
aw. Megalon
-
favoritefavoritefavorite -
August 25, 2009
Subject: Morse code
Subject: Morse code
Come to say, though I don't have an interest in Morse code, I was searching for the beeps to make a SOS distress signal for my project. I couldn't find
...
a complete sample so I had to construct one and your collection was my first and last hit.
I'm sure that there are (amateur)sailors that find an interest in knowing these signals. I'm glad you posted this, cheers.
I'm sure that there are (amateur)sailors that find an interest in knowing these signals. I'm glad you posted this, cheers.
Reviewer:
drewaf2z
-
August 7, 2009
Subject: Learning Morse Code
Subject: Learning Morse Code
The labeled code speeds are actually somewhat slower than what is heard in the recordings. I'm not sure why that would be the case, unless there was a
...
different standard for calculating WPM at the time these recordings were made.
There have been nearly 1,000 downloads of these recordings in the first year, so I guess people find them to be somewhat interesting. If you have actually tried o learn Morse Code from these recordings please post your comments.
There have been nearly 1,000 downloads of these recordings in the first year, so I guess people find them to be somewhat interesting. If you have actually tried o learn Morse Code from these recordings please post your comments.
There are 10 reviews for this item. .
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